Conductance fluctuations in a quantum wire with a non-uniform scattering potential

被引：0
|
作者：
Horsell, D. W. [1 ]
Galaktionov, E. A. [1 ]
Savchenko, A. K. [1 ]
Kretinin, A. V. [1 ]
Ghosh, A. [1 ]
Beere, H. E. [1 ]
Ritchie, D. A. [1 ]
机构：
[1] Univ Exeter, Sch Phys, Stocker Rd, Exeter EX4 4QL, Devon, England
来源：
PHYSICS OF SEMICONDUCTORS, PTS A AND B | 2007年 / 893卷
关键词：
conductance fluctuations; scattering potential; quantum wire; quantum Hall effect;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We study fluctuations in the conductance of a narrow GaAs/AlGaAs quantum wire. In strong magnetic fields we show that these fluctuations originate from a complex mixture of transport processes. Here back-scattering of electrons is determined by the position in energy of the bulk Landau level. We experimentally resolve a diffusion-tunnelling transition as the Fermi level is moved between integer filling factors.
引用
收藏
页码：741 / +
页数：2
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